C–H.I− interactions in ferrocene derivatives: structures of (Ferrocenylmethyl)triphenylphosphonium iodide and 1,1'-ferrocenediylbis(methyltriphenylphosphonium iodide) dichloromethane solvate (1/1)

摘要

The cations in (ferrocenylmethyl)triphenylphosphoniumudiodide, [{(C5H5)Fe(C5Ha)}CH2P(C6Hs)3]+.I -, (1), andudin 1, l'-ferrocenediylbis(methyltriphenylphosphoniumudiodide) dichloromethane solvate, [Fe{(C5H4)CH2-udP(C6H5)3}212+.2I-.CH2C12, (2), are involved in three dimensional networks of C--H. • .I- interactions betweenudphenyl C--H groups and I- anions. In (1), the cation residesudin a general position while one I- anion is on audtwofold axis and a second I- anion is at an inversionudcentre. The shortest C...I- distances are 3.886 (2) andud3.989 (2)A to the I- ion which resides on an inversionudcentre. The cation in (2) has approximate mirror symmetryudand lies in a general position in the unit cell alongudwith its two I- anions. The shortest C--.I- interactionsudare 3.810 (4) and 3.886 (5) A,.